http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : Hongxu Guo (검색결과 4 건)
- 무료
- 기관 내 무료
- 유료
-
Hongxu Guo,Zishan Zheng,Jianhua Chen,Wen Weng,Mingqiang Huang 한국공업화학회 2016 Journal of Industrial and Engineering Chemistry Vol.36 No.-
TiO2@C microspheres were fabricated through facile template-free one-pot hydrothermal reaction, inwhich ferrocene was first simultaneously used as carbon source and structure directing agent. Thecomposite obtained have been characterized by X-ray powder diffraction, field emission scanningelectron microscopy, diffuse reflectance spectroscopy, X-ray photoelectron spectroscopy, and nitrogenadsorption–desorption isotherms. The results show that the peripheries of the microspheres are stackedby several TiO2 particles. The band gap energy the as-prepared sample is estimated to be 2.26 eV. Allcarbon species in the composite are modified on the surface of the photocatalyst. The as-preparedTiO2@C microspheres exhibited higher visible-light photocatalytic activity for the degradation of organicpollutants (Congo red and 4-nitrophenol) than that of N-doped TiO2 catalyst. The OH radicals formed inthe process of photocatalytic degradation were also detected through fluorescence technique.
-
Adsorption behavior of Congo red from aqueous solution on La2O3-doped TiO2 nanotubes
Hongxu Guo,Jianhua Chen,Wen Weng,Zishan Zheng,Dongfang Wang 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.5
Composite adsorbent, TiO2 nanotubes doped by La2O3, were prepared and characterized by IR, XRD, SEM, and XPS, their adsorption properties were investigated in the aqueous solution employing Congo red as the target pollutant. The adsorption experiments exhibited that adsorption equilibrium of Congo red over the adsorbent was rapidly achieved within 10 min, and the adsorption kinetics was in accord with the pseudo-second-order kinetics model. Moreover, intraparticle diffusion was not the determining step in the entire adsorption process, and the adsorption belonged to a chemical adsorption. Langmuir, Freundlich, Temkin and Dubinin–Radushkevich isothermal equations were utilized to fit the equilibrium adsorption data, in which the Temkin equation was verified to fit the adsorption behaviors most satisfactorily with the correlation coefficient of 0.998. The adsorption mechanism was also studied.
-
Cyclic Behavior of Sand under Traffic Loading with ‘Inclined’ Consolidation
Lin Guo,Yuan Fang,Tingyu Wu,Jun Wang,Hongxu Jin,Li Shi 대한토목학회 2021 KSCE JOURNAL OF CIVIL ENGINEERING Vol.25 No.5
To investigate the vertical strain development of sand under traffic loading after the process of ‘inclined’ consolidation, a series of cyclic drained tests were carried out by using a hollow cylinder apparatus. Three parameters were considered in this paper: initial consolidation angle, vertical cyclic stress ratio and cyclic torsional stress ratio. Test results show that the vertical strain under traffic loading path is larger than that of specimens whose cyclic torsional stress ratio is equal to 0 in the same situation. Furthermore, the vertical stain will decrease with the increase of consolidating inclination in the situation of same values of vertical cyclic stress ratio and cyclic torsional stress ratio. When initial consolidation angle is equal to 0o and 22.5o, the vertical strain will increase with increasing value of cyclic torsional stress ratio, while the effect of cyclic torsional stress ratio on vertical strain will be less significant when initial consolidation angle is equal to 45o. Moreover the trend that vertical strain increases with increasing value of cyclic torsional stress ratio will be more significant for a larger value of vertical cyclic stress ratio.
-
Experimental Study on the Thermal Performance of Rice Straw-Mortar Composite Materials
Rongfei Zhao,Yan Qin,Hongxu Guo,Huaqian Zhang,Wei Gao,Tieliang Wang 대한토목학회 2022 KSCE JOURNAL OF CIVIL ENGINEERING Vol.26 No.1
Thermal properties of mortar block can be improved through adding straw, which is related to the type, size, amount of the straw, and so on. In order to test the thermal insulation performance of rice straw-mortar composite materials, this paper adopted response surface methodology (RSM), which employed a four-factor, three-level Box-Behnken design regarding gypsum content (% mass fraction of gypsum), straw size (mm), straw content (% mass fraction of straw) and water content (g) of rice straw-mortar composite materials as independent variables. Thermal conductivity, thermal diffusivity and thermal resistance of composite materials were response variables. The straw content and water content extremely significantly affected all the responses; the straw size had extremely significant effect on the thermal resistance as well as significant effect on the thermal conductivity. According to the optimum solution of regression equations, the optimum values of thermal conductivity, thermal diffusivity and thermal resistance were 0.048 W (m K)−1, 0.163 mm2 s−1, and 12.743 K W−1, respectively. The optimization options of gypsum content, straw size, straw content and water content were 5.01%, 20 mm, 22.7% and 0.06 g, respectively. Due to the state change of pore water, thermal conductivity of rice straw-mortar composite materials containing free water decreased seriously after complete freezing and increased slightly after 15 times freeze-thaw. During first freezing process, the thermal conductivity increased obviously with the increasing of freezing time, then increased slowly. A theoretical basis was provided by the experimental results, which was essential for the study on the thermal performance of rice straw-mortar composite materials as well as the application of similar materials.
연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
